4-(2-Hydroxyethyl)-1-((4-iodophenyl)sulfonyl)-5-methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one CAS 866040-22-4
| CAS No. | 866040-22-4 |
| Molecular Formula | C18H17IN2O4S |
| Molecular Weight | 484.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 4-(2-Hydroxyethyl)-1-((4-iodophenyl)sulfonyl)-5-methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (CAS 866040-22-4), a certified reference material (molecular formula C18H17IN2O4S, MW 484.31 g/mol) for analytical method development and quality control.
Based on its molecular formula C18H17IN2O4S, 4-(2-Hydroxyethyl)-1-((4-iodophenyl)sulfonyl)-5-methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, iodine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 484.31 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 4-(2-Hydroxyethyl)-1-((4-iodophenyl)sulfonyl)-5-methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C18H17IN2O4S |
| Molecular Weight | 484.31 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
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